Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1982-01-25
1984-01-10
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
128 1R, A61M 500
Patent
active
044251190
ABSTRACT:
An implantable device for providing extracorporeal access to a blood vessel includes a core section having an axial passage for communication between the blood vessel and the exterior of an organism's skin. The core section is seated within a housing having a lower portion in the form of a tubular band which encompasses the blood vessel. The upper part of the housing has a circular rim supported by spaced-apart struts, forming an open-sided, bowl-like structure, through the center of which the upper portion of the core protrudes. The bowl-like structure allows the incised edges of the skin around the access site to be tucked into its interior. A sealing member is threaded onto the protruding section of the core and is configured to hold the skin so that the subcutaneous tissue can grow between the struts and reattach itself to the skin, thereby resulting in a permanent and stable implant. The interface between the core passage and the blood vessel is sealed by a resilient valving member which has a peripheral wall with one or more slits. The valve is opened by axial distension, so that the slits are opened to provide ports in communication with the interior of the blood vessel. To actuate the valve, a cannula having a movable rod is inserted into the passage, and the rod is urged downwardly so that its tip axially distends the valving member.
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Lester Michelle N.
Peterson Gordon L.
Rosenbaum C. Fred
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